1662423 has 24 divisors (see below), whose sum is σ = 2648448. Its totient is φ = 924336.

The previous prime is 1662403. The next prime is 1662439. The reversal of 1662423 is 3242661.

It is not a de Polignac number, because 1662423 - 2¹³ = 1654231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1662393 and 1662402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6190 + ... + 6452.

It is an arithmetic number, because the mean of its divisors is an integer number (110352).

2^1662423 is an apocalyptic number.

1662423 is a deficient number, since it is larger than the sum of its proper divisors (986025).

1662423 is a wasteful number, since it uses less digits than its factorization.

1662423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 316 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 1662423 is about 1289.3498361577. The cubic root of 1662423 is about 118.4623961582.

The spelling of 1662423 in words is "one million, six hundred sixty-two thousand, four hundred twenty-three".